YOU SAID:

what's new can not be undone into several pieces

INTO JAPANESE

何が新しいのかいくつかの部分に元に戻すことはできません

BACK INTO ENGLISH

I can't undo what's new in some parts

INTO JAPANESE

一部の新しい機能を元に戻すことはできません

BACK INTO ENGLISH

Some new features can not be undone

INTO JAPANESE

一部の新機能は元に戻すことができません

BACK INTO ENGLISH

Some new features can not be undone